
AMI and Its Applications 285
Figure 10.2: C12.22 mesh communication network.
layer seven of C12.22 include an identification service, a read service, a write
service, a security service, a trace service, and others; layers 1 through 6 sup-
port various physical network connections in the meter industry as well as the
standard Internet connection.
IEC62056 [26]
IEC62056, which defines the meter interface classes for the Companion
Specification for the Energy Metering (COSEM) model, includes a series of
standards on data exchange for meter reading, tariffs and load control. Simi-
lar to ANSI C12.22, IEC62056-53, the application layer communication pro-
tocol ...